1-5/8 in. Phosphate-Coated Drywall Nails (1 lb.-Pack) feature cupped saucer heads that are designed to countersink. The phosphate coating helps prevent a chemical reaction with the drywall compound. For attaching drywall to wood studs. Phosphate coated. Cupped saucer-head design. Smooth shank design. Includes 270 nails/1 Lb.